Today's Message Index:
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1. 04:03 AM - antenna (Douwe Blumberg)
2. 04:56 AM - Re: Wing Construction (Dangerous Dave)
3. 05:26 AM - the Pietenpol has drag written all over it (Cuy, Michael D. (GRC-RXD0)[ASRC AEROSPACE CORP])
4. 05:51 AM - Re: Re: Wing Construction (Charles Campbell)
5. 06:24 AM - Re: the Pietenpol has drag written all over it (TOM STINEMETZE)
6. 06:35 AM - Re: the Pietenpol has drag written all over it (K5YAC)
7. 06:41 AM - Re: Piet building youtube videos (MPB)
8. 09:04 AM - Re: the Pietenpol has drag written all over it (kevinpurtee)
9. 11:32 PM - Re: Metal Fittings (PShipman)
Message 1
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WOW! All of your answers were exactly what I needed to get me going, thanks!
Douwe
Message 2
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| Subject: | Re: Wing Construction |
Chuck,beauty job.Keep up the good work.dave
--------
Covering Piet
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=328812#328812
Message 3
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| Subject: | the Pietenpol has drag written all over it |
I really find it amusing to think that people toil much in thought or action about
really trying reduce the drag on a 1930's designed
airplane with tons of struts, cables, and support braces. It's kinda like putting
whipped cream on an onion.
On the other hand I admire some of the ingenuity (practical too) of those who have
used round tubing (like Brian Kenny in Candada) and
others like Chuck Gantzer in Kansas who have faired things like round wing struts
with balsa and fabric to make them more aerodynamic.
In 1927 the Ryan Aeronautical Co. used balsa wood and fabric-wrapped streamlined
blocks around the landing gear legs of Charles Lindbergh's
Spirit of St. Louis to streamline those but then again he was looking for 33 hours
of flying time on 450 gallons of gasoline to keep him dry to Paris, not going
for an hour ride in a Pietenpol at 500 feet.
The nice thing about a draggy airplane is that you don't need flaps and if brought
in for landing power off at a steep approach angle
you can used VERY precious little real estate getting it down and stopped which
his a crowning jewel in the event of a forced landing with
a farmers fence looming as you roll out after your Corvair crankshaft snaps. (Shad--you
know I'm kidding you. Kevin too....but it 's our job)
Mike C.
do not archive
Message 4
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| Subject: | Re: Wing Construction |
Yes, I have a couple of questions. I have been planning to use solid
3/4-inch boards for my spars. A few pics on the forum, including yours,
have sort of gotten me thinking about built-up spars. First, where did you
find 3/8-inch thick plywood, and how did you scarf the plywood pieces on a
table saw? You asked for it! :>) Chuck C, Winston-Salem, NC
----- Original Message -----
From: "cjborsuk" <cjborsuk@yahoo.com>
Sent: Thursday, January 27, 2011 10:15 PM
Subject: Pietenpol-List: Re: Wing Construction
>
> I used a combination of quarter-inch and three-eighth marine ply, doug fir
> and spruce. I cut the 3/8 ply to width and scarfed two pieces together.
> After a lot of trial and error on getting the scarf joints to work, I came
> up with a solution using my table saw. I am very pleased with the result.
> I can go into more detail on how I did this if needed. I then ripped the
> doug fir for the top and bottom of the spars and scarfed those together. I
> used the quarter-inch ply to fill in the middle and end of the spars. I
> had some left over spruce that I planed down for the tips.
>
> Results:
> Time: This method takes much longer than using solid spruce and routing
> out the spars.
> Money: I saved a bunch of money. I figure I spent about $300 total for all
> the material. I was able to buy the marine ply and doug fir local.
> Weight: Based on what I have been able to determine using info in the
> forum, they weigh slightly less than the routed spruce spars.
> Strength: I am sure this could be debated, but I think they are stronger
> than the spruce.
>
> As stated many times in this forum, I find that working with spruce is
> much more enjoyable than working with the doug fir. Spruce is just a joy
> to work with. With the doug fir plan on many splinters. All my ribs are
> spruce and I did not get the first splinter.
> Overall, I am very pleased with the way the spars turned out.
>
> Dimensions: Approx 5 inches tall (front spar a bit taller than the aft).
> 7/8 on the width.
>
> Chuck
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=328787#328787
>
>
>
Message 5
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| Subject: | Re: the Pietenpol has drag written all over it |
There be those with a mighty 110 HP Corvair and those who only wish they
had one. Sour grapes doncha know.
Stinemetze
do not archive
>>> "Cuy, Michael D. (GRC-RXD0)[ASRC AEROSPACE CORP]" <michael.d.cuy@nasa.g
ov> 1/28/2011 7:22 AM >>>
The nice thing about a draggy airplane is that you don't need flaps and if
brought in for landing power off at a steep approach angle
you can used VERY precious little real estate getting it down and stopped
which his a crowning jewel in the event of a forced landing with
a farmers fence looming as you roll out after your Corvair crankshaft
snaps. (Shad--you know I'm kidding you. Kevin too....but it 's our
job)
Mike C.
Message 6
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| Subject: | Re: the Pietenpol has drag written all over it |
What's wrong with putting whipped cream on an onion?
--------
Mark Chouinard
Wings, Center Section and Empannage framed up - Working on Fuselage
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=328829#328829
Message 7
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| Subject: | Re: Piet building youtube videos |
Chuck,
How long did you have to leave it in the jig? Did you wet the cap strip down first
or steam it? That looks like a pretty slick way to form them!
Thanks for the video.
Mike
Prunedale, CA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=328830#328830
Message 8
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| Subject: | Re: the Pietenpol has drag written all over it |
Et tu, Brute????
[Wink]
do not archive
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=328835#328835
Message 9
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| Subject: | Re: Metal Fittings |
Scott,
Thanks for pointing out the spirit of building the Piet as a low cost homebuilt!
I breathed a sigh of releaf reading your post ... potential equipment costs
and limited space were already starting to worry me. And my partner and I have
only just begun.
Hoorah for you!
Perry
--------
Perry Shipman
Lakeside, CA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=328886#328886
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